The East Shaffer Hill Pegmatite is a feldspar mine located in Jefferson county, Colorado at an elevation of 7,598 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 7,598 Feet (2,316 Meters)
Commodity: Feldspar
Lat, Long: 39.7125, -105.38194
Map: View on Google Maps
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East Shaffer Hill Pegmatite MRDS details
Site Name
Primary: East Shaffer Hill Pegmatite
Commodity
Primary: Feldspar
Tertiary: Tantalum
Tertiary: Copper
Tertiary: REE
Location
State: Colorado
County: Jefferson
District: Clear Creek Pegmatite Province
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1945
Discovery Year: 1938
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: R
Description: Front Range Uplift, Denver Basin
Type: L
Description: Floyd Hill Fault Zone
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Cleavelandite
Ore: Microlite
Ore: Malachite
Ore: Microcline
Gangue: Monazite
Gangue: Garnet
Gangue: Quartz
Gangue: Magnetite
Comments
Comment (Deposit): ZONED PEGMATITES TREND N 70 TO 90 E AND CONTAIN CORE OF K-FELDSPAR, ROSE TO WHITE OR BLUISH QUARTZ; WALL ZONE OF PATCHY GRAPHIC AND K-FELDSPAR. MICROLITE AND MALACHITE STAINS ON FELDSPAR.
Comment (Workings): THREE OPEN CUTS, DEEPEST IS 8 FT
Comment (Location): ON DIVIDE AREA BETWEEN BEAVER BROOK AND SODA CREEK ABOUT ONE MILE NE OF SHAFFER HILL ; INFO FROM LAND.ST :(1975)
References
Reference (Deposit): BOOS, M.F., 1954, GENESIS OF PRECAMBRIAN PEGMATITES IN THE DENVER MOUNTAIN PARKS AREA, COLORADO: GSA BULL., V. 65, P. 115-142
Reference (Deposit): SHERIDAN, D.M., AND MARSH, S.P., 1976, GEOLOGIC MAP OF THE SQUAW PASS QUADRANGLE, CLEAR CREEK, JEFFERSON, AND GILPIN COUNTIES, COLORADO: USGS MAP GQ-1337
Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITES DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 28.
Colorado Mining Photos
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